Condenser
UKL
Its performance features in brightfJe
ld
are the
sam
e
as
those
of
the condenser no.
56.
The annular s
lO
PS necessary for phase contrast or darklield illu-
mination are situated in a turret plate (9.4) for qu
ic
k chaoge.
P
os
iti
on "
H"
(9.3) of the turret is for brightfle
ld
(Hellfeld)
investigations. Positions
I,
2 and 3 accommodate the annular
SlOPS
PHACO
1,2 and
3.
These can be aligned to
th
e phase ring
of
the objective
in
li
se
by
pushing
in
the two centring screws
(9.
2)
. Positi
on
4 is occupied by an annular st
op
for darkf.eJd
wi
th o
bj
ectives from
lOx
to 40x.
Th
e wh
ee
l (9.5) is for ad
justing
th
e ape
rtur
e di
aph
ragm,
on
ly
necessary for brightfield investigations.
It
is fully
opened
for
phase contrast
or
darkfield (PH position).
F
ig
. 9
UKL
conden
se
r
1 Adjustment tel
es
co
pe
for
ct:
ntri
ng
the a
nn
ular
stop
s
2 Centring
sc
r
ews
(pr
ess
io
to
u
se)
3 Turret
pl
ate p
os
ition indi
ca
ti
on
4
Tu
rr
et
pla
te
5 Adjustment wheel
wi
th
sca
le
fo
r
ape
rt
ure diaphragm
Darkfield condensers
00.80
and
D!.l9
The
co
ndenser
D 0.
80
is
intend
ed for darkfleld investigations
with
lOx
to
40x
objectives.
Imag
e contr
as
t
is
optimised he
re
as
compar
ed w
ith
th
e darkfieJd produced w
ith
annular
stop
s.
The conden
se
r D
1.1
9 has an oil
imm
ersion cap and is used
toge
th
er with
oi
l
immersion
object
iv
es. The darkfield
con
den-
ser caps
are
also available without
bottom
parts and can be
screwed
onto
the
b
ottom
part
of
th
e
LK
condenser.
Fig.
10
Darkfield objec
tiv
e
and
funnel
stop
J
Co
ndensertop D
0.80
-
0.95
SI. J
2 Oil
co
ndenser
top
D
1.
19
-
1.44
3 Lower pari
of
co
nd
en
se
r with dovetail guide
4 Sp
ec
ial darkfield o
bj
ec
ti
ve
EF
100
/
1.
25
-0
.
60
Oel wilh built-in i
ri
s
diaphra
gm
5 Knurled ring for adjustment
oflhe
iris di
aph
r
ag
m
6 Funn
el
slop for
th
e o
il
immersion
ob
jective
9
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